P2808 code meaning
Pressure Control Solenoid G Performance/Stuck Off
Powertrain system Generic code P28xx codes Check engine light
What P2808 means
P2808 means valve G does not deliver the pressure or effect it is commanded to give. GM documents two very different applications. In the 2016 eight-speed table G is the converter clutch valve: with at least 750 kPa commanded, slip of 130 rpm or more in lock mode for 4 s, counted three times, sets the code, and the MIL needs two trips. In the 2023 table for the Corvette dual-clutch gearbox, G is the proportional valve of the electronic limited-slip differential; after a fault triggers a recovery routine, failed current profile checks show the valve hydraulically stuck off, logged as Type B. For the driver this means converter slip and higher fuel use, or a differential that no longer locks. The opposite fault is P2809.
P2808 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor1.5 to 10 hours
- Clears after repairAfter a drive cycle
Symptoms of P2808
- MIL on, engine speed higher than expected at cruise
- Higher fuel consumption and transmission heat
- Limited-slip function inactive on Corvette
Common causes of P2808
- Most likelyValve G stuck by contamination so pressure stays low
- PossibleWorn converter clutch lining that slips despite pressure
- PossibleLow fluid level or internal leak in the circuit
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Pressure control solenoid gValve body
What each part of P2808 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 8 | Area: transmission. |
| 08 | The exact fault in that area. |
What to do next
- Note P2808 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P2808
What does P2808 mean?
P2808 means "Pressure Control Solenoid G Performance/Stuck Off". P2808 means valve G does not deliver the pressure or effect it is commanded to give. It is a generic code, so it means the same on every make.
Is it safe to drive with P2808?
Drive gently and only to a workshop. With P2808 the car can go into limp mode (reduced power) to protect itself.
Will P2808 fail an emissions test?
Yes, it can. P2808 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P2808 to fix?
Difficulty: workshop only. A typical repair takes 1.5 to 10 hours of work. This is a job for a workshop.
Will P2808 clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.